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An abbreviated name for a "Mind Blowing Batt"

-an awesomely massive batt-like joint.
Dude, that is one fuckin' M Double-B!
by HeadlyGrange March 08, 2011
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Aug 4 Word of the Day
Man's greatest invention, brain bleach removes bad memories and general DO NOT WANT moments. Every household should have a few gallons.
1: Dude, I just walked in on my parents.
2: Have some Brain Bleach!
by Andikun November 06, 2007
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